Pressure Switch 4 Port 145 PSI On 175 PSI Off Red Lever
Pressure Switch 4 Port 145 PSI On 175 PSI Off Red Lever

Z-AC-0749 Pressure Switch 4 Port 145 PSI On 175 PSI Off Red Lever

In stock
Part Number
Z-AC-0749
$67.32
Part Number: Z-AC-0749
Shipping Weight: 1.2 Lbs

The Z-AC-0749 Pressure Switch is a 4-port pressure switch that is fixed at 110 PSI cut-in and 135 PSI cut-out pressures with no unloader for pressure relief when the air compressor turns off.

The switch has special connections for the molded cord and only has one set of spade contacts inside the switch for UMC Style compressor pumps.


This AC-0749 switch is an OEM replacement part that Furnas Hubble manufactures. It was originally made for use on air compressors by DeWalt, DeVilbiss, Sears Craftsman, Porter Cable, and others.


The Pressure Switch is used to control the operation of the air compressor.

This switch senses the pressure in the compressor tank and turns the compressor on and off to maintain the desired pressure.

This switch has four ports: One for the supply line, one for the outlet line, and the other two ports for the safety valve and pressure gauge.



The following are the specifications of the Z-AC-0749 pressure switch.


  • Pressure Range:110 Cut-In to 135 PSI Cut-Out

  • Number of Ports:4 1/4 FPT

  • Unloader: No

  • OEM Part: Yes

  • Used on Air Compressors By: Stanley Black and Decker Brands


The AC-0749 Pressure Switch was used on the following partial list of oil-free Hotdog style air compressor models.

FAC-23 Type 0 DeVilbiss Mity Mite Oil Free UMC Compressor
FAC-23 Type 1 DeVilbiss Mity Mite Oil Free UMC Compressor

EXFAC-23-CA Type 0 DeVilbiss Mity Mite Oil-Free UMC Compressor
EXFAC-23-CA Type 1 DeVilbiss Mity Mite Oil-Free UMC Compressor


EXFA2030SV-CA A Type 0 DeVilbiss Mity Mite Oil-Free UMC Compressor

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Part number Z-AC-0749, Pressure Switch, is no longer available with no replacement.